Traveler's Backpacks Compat?

[Fayvira-DraGon]

In the ../minecraft/config/clickopener.json:

...
  "whitelist": [
    "item#accessories:back",
    "block#accessories:back"
  ],
...

but when I RIGHT (default) click on a traveler's backpack, the item behaves as though it opens (places itself back into the inventory slot), but then the backpack's inventory doesn't open.

My Prism launcher did log this though:

[23:36:34] [Server thread/ERROR]: Failed to handle packet net.minecraft.class_2813@5019688b, suppressing error
java.lang.IllegalStateException: BackpackWrapper is not initialized!
	at knot/com.tiviacz.travelersbackpack.blockentity.BackpackBlockEntity$1.createMenu(BackpackBlockEntity.java:302) ~[travelersbackpack-fabric-1.21.1-10.1.6.jar:?]
	at knot/net.minecraft.class_3222.method_17355(class_3222.java:1163) ~[client-intermediary.jar:?]
	at knot/com.tiviacz.travelersbackpack.blockentity.BackpackBlockEntity.openBackpack(BackpackBlockEntity.java:293) ~[travelersbackpack-fabric-1.21.1-10.1.6.jar:?]
	at knot/com.tiviacz.travelersbackpack.blocks.TravelersBackpackBlock.method_55766(TravelersBackpackBlock.java:89) ~[travelersbackpack-fabric-1.21.1-10.1.6.jar:?]
	at knot/net.minecraft.class_4970$class_4971.method_55781(class_4970.java:1173) ~[client-intermediary.jar:?]
	at knot/pw.smto.clickopener.impl.BlockScreenOpener.open(BlockScreenOpener.java:29) ~[clickopener-1.0.0+1.21.jar:?]
	at knot/pw.smto.clickopener.impl.BlockScreenOpener.open(BlockScreenOpener.java:14) ~[clickopener-1.0.0+1.21.jar:?]
	at knot/pw.smto.clickopener.api.OpenContext.openerFunction(OpenContext.java:84) ~[clickopener-1.0.0+1.21.jar:?]
	at knot/pw.smto.clickopener.util.ScreenHelper.openScreenFromContext(ScreenHelper.java:27) ~[clickopener-1.0.0+1.21.jar:?]
	at knot/pw.smto.clickopener.util.ScreenHelper.openScreen(ScreenHelper.java:57) ~[clickopener-1.0.0+1.21.jar:?]
	at knot/net.minecraft.class_3244.handler$zcf000$clickopener$onClickSlot(class_3244.java:2537) ~[client-intermediary.jar:?]
	at knot/net.minecraft.class_3244.method_12076(class_3244.java:1718) ~[client-intermediary.jar:?]
	at knot/net.minecraft.class_2813.method_12191(class_2813.java:71) ~[client-intermediary.jar:?]
	at knot/net.minecraft.class_2813.method_11054(class_2813.java:14) ~[client-intermediary.jar:?]
	at knot/net.minecraft.class_2600.method_11072(class_2600.java:27) ~[client-intermediary.jar:?]
	at knot/net.minecraft.class_3738.run(class_3738.java:18) ~[client-intermediary.jar:?]
	at knot/net.minecraft.class_1255.method_18859(class_1255.java:162) ~[client-intermediary.jar:?]
	at knot/net.minecraft.class_4093.method_18859(class_4093.java:23) ~[client-intermediary.jar:?]
	at knot/net.minecraft.server.MinecraftServer.method_24306(MinecraftServer.java:864) ~[client-intermediary.jar:?]
	at knot/net.minecraft.server.MinecraftServer.method_18859(MinecraftServer.java:173) ~[client-intermediary.jar:?]
	at knot/net.minecraft.class_1255.method_16075(class_1255.java:136) ~[client-intermediary.jar:?]
	at knot/net.minecraft.server.MinecraftServer.method_20415(MinecraftServer.java:846) ~[client-intermediary.jar:?]
	at knot/net.minecraft.server.MinecraftServer.method_16075(MinecraftServer.java:840) ~[client-intermediary.jar:?]
	at knot/net.minecraft.class_1255.method_5383(class_1255.java:121) ~[client-intermediary.jar:?]
	at knot/net.minecraft.server.MinecraftServer.method_16208(MinecraftServer.java:814) ~[client-intermediary.jar:?]
	at knot/net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:702) ~[client-intermediary.jar:?]
	at knot/net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:281) ~[client-intermediary.jar:?]

[Fayvira-DraGon]

I talked to the Traveler's Backpack dev & they said that the backpacks use the command/function openBackpack in BackpackContainer